<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

</body>

</html>
<script>
    class Father {
        constructor() {
            this.heigth = 199;
            this.color = 'pink';
            this.render();
        }
        render() {
            console.log('我是用class面向对象继承的');
        }
    }
    
    class Son extends Father{}
    let s =new Son()
    console.log(s);
</script>